The Mercedes-Benz C43 AMG uses 12174NA or 2357NA bulbs for front turn signals and 12496 or PY21W bulbs for rear turn signals, with each size corresponding to specific vehicle configurations. The replacement chart covers 1998 through 2019 model years and details bulb size specifications across the vehicle's production range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.